Technaxx BT02. Host interface: USB, Connector(s): 1 x USB; 1 x Bluetooth. Width: 18.5 mm, Depth: 22.5 mm, Height: 8 mm. Power supply type: 5 VDC. Packaging width: 108 mm, Packaging depth: 12 mm, Packaging height: 10 mm. Connectivity technology: Wireless, Compatibility: Class II